Version 4
SHEET 1 1040 680
WIRE -640 -48 -640 -64
WIRE -544 -48 -544 -64
WIRE -640 64 -640 32
WIRE -544 64 -544 32
WIRE -272 176 -336 176
WIRE -96 176 -272 176
WIRE -656 240 -688 240
WIRE -544 240 -656 240
WIRE -400 240 -400 176
WIRE -400 240 -464 240
WIRE -400 256 -400 240
WIRE -272 256 -336 256
WIRE -240 256 -272 256
WIRE -656 272 -656 240
WIRE -96 272 -96 176
WIRE -96 272 -176 272
WIRE -48 272 -96 272
WIRE -240 288 -272 288
WIRE -400 336 -400 256
WIRE -272 336 -272 288
WIRE -272 336 -320 336
WIRE -272 368 -272 336
WIRE -656 384 -656 352
FLAG -640 64 0
FLAG -544 64 0
FLAG -208 304 V-
FLAG -544 -64 V-
FLAG -640 -64 V+
FLAG -208 240 V+
FLAG -272 368 0
FLAG -656 384 0
FLAG -48 272 Out
IOPIN -48 272 Out
FLAG -688 240 In
IOPIN -688 240 In
SYMBOL voltage -640 -64 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage -544 -64 R0
SYMATTR InstName V2
SYMATTR Value -5
SYMBOL LTC6241 -208 272 R0
WINDOW 3 26 -62 Left 0
SYMATTR InstName U1
SYMBOL cap -400 272 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 43 VBottom 2
SYMATTR InstName C8
SYMATTR Value 5nF
SYMBOL res -256 272 R180
WINDOW 0 34 65 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R14
SYMATTR Value 390k
SYMBOL res -304 320 R90
WINDOW 0 65 56 VBottom 2
WINDOW 3 70 54 VTop 2
SYMATTR InstName R7
SYMATTR Value 583
SYMBOL cap -336 160 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 -50 32 VTop 2
SYMATTR InstName C7
SYMATTR Value 5nF
SYMBOL res -448 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R13
SYMATTR Value 39k
SYMBOL voltage -656 256 R0
WINDOW 3 -54 167 Left 2
WINDOW 123 28 122 Left 2
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value SINE(0 .1 2125 .005 0 0 50)
SYMATTR Value2 AC 1
TEXT -136 400 Left 0 !;tran .06
TEXT -136 424 Left 2 !.ac oct 1000 2125 2300
TEXT -376 440 Left 2 ;Fc = 2.124 kHz\nA = 13.985 dB\nFl = 2.044 kHz\nFh = 2.207 kHz\nBW = 163 Hz\nQ = 13
TEXT -448 -80 Left 2 ;Output reaches 50% of final value 1.3 ms after input tone starts.\nOutput drops to 50% of final value 1.5 ms after input tone stops.
TEXT -448 -24 Left 2 ;A=6.9 dB at 2.295 kHz, down about 7.1 dB.